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hash_ref.t
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hash_ref.t
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use v6;
use Test;
plan 31;
# basic lvalue assignment
{
my $hash;
isa_ok $hash, Any;
$hash{"1st"} = 5;
isa_ok $hash, Hash;
is $hash{"1st"}, 5, 'lvalue hash assignment works (w/ double quoted keys)';
$hash{'1st'} = 4;
is $hash{'1st'}, 4, 'lvalue hash re-assignment works (w/ single quoted keys)';
$hash<3rd> = 3;
is $hash<3rd>, 3, 'lvalue hash assignment works (w/ unquoted style <key>)';
}
# basic hash creation w/ comma separated key/values
{
my $hash = hash("1st", 1);
isa_ok $hash, Hash;
is $hash{"1st"}, 1, 'comma separated key/value hash creation works';
is $hash<1st>, 1, 'unquoted <key> fetching works';
}
{
my $hash = hash("1st", 1, "2nd", 2);
isa_ok $hash, Hash;
is $hash{"1st"}, 1,
'comma separated key/value hash creation works with more than 1st pair';
is $hash{"2nd"}, 2,
'comma separated key/value hash creation works with more than 1st pair';
}
# hash slicing
{
my $hash = {'1st' => 1, '2nd' => 2, '3rd' => 3};
isa_ok $hash, Hash;
my @slice1 = $hash{"1st", "3rd"};
is +@slice1, 2, 'got the right amount of values from the %hash{} slice';
is @slice1[0], 1, '%hash{} slice successful (1)';
is @slice1[1], 3, '%hash{} slice successful (2)';
my @slice2;
@slice2 = $hash<3rd 1st>;
is +@slice2, 2, 'got the right amount of values from the %hash<> slice';
is @slice2[0], 3, '%hash<> slice was successful (1)';
is @slice2[1], 1, '%hash<> slice was successful (2)';
# slice assignment
$hash{"1st", "3rd"} = (5, 10);
is $hash<1st>, 5, 'value was changed successfully with slice assignment';
is $hash<3rd>, 10, 'value was changed successfully with slice assignment';
$hash<1st 3rd> = (3, 1);
is $hash<1st>, 3, 'value was changed successfully with slice assignment';
is $hash<3rd>, 1, 'value was changed successfully with slice assignment';
}
# hashref assignment using {}
# L<S06/Anonymous hashes vs blocks/So you may use sub or hash or pair to disambiguate:>
{
my $hash_a = { a => 1, b => 2 };
#?niecza todo
isa_ok $hash_a, "Hash";
my $hash_b = { a => 1, "b", 2 };
#?niecza todo
isa_ok $hash_b, "Hash";
my $hash_c = hash('a', 1, "b", 2);
#?niecza todo
isa_ok $hash_c, "Hash";
my $hash_d = hash 'a', 1, "b", 2;
#?niecza todo
isa_ok $hash_d, "Hash";
}
# infinity HoHoHoH...
{
my %hash = (val => 42);
%hash<ref> = %hash;
isa_ok %hash, Hash;
#?pugs todo
isa_ok %hash<ref>, Hash;
#?pugs 3 skip 'Cannot cast into Hash: VRef'
isa_ok %hash<ref><ref>, Hash;
is %hash<ref><val>, 42, "access to infinite HoHoHoH... (1)";
is %hash<ref><ref><val>, 42, "access to infinite HoHoHoH... (2)";
}
# vim: ft=perl6